Constructional material



Patented Jan. 13, 1931 UNITED STATES. PATENT OFFICE ALBERT C. FISCHER,OF CHICAGO, TLLINOIS, ASSIGNOR TO THE PHILIP CAREY MANU- FACTURINGCOMPANY, A CORPORATION: OF OHIO QONSTRUCTIONAL M:A'JIFERIAL No Drawing.Application filed. August 15, 1927, Serial No; 213,183. Renewed July 14,1930.

' This invention relates to constructional material, such as roofingmaterial, insulating material, tapes, shingles, packing and the like. I

The object of my present invention is to provide such constructionalmaterials with an adhesive coating which is normally sticky or tacky tothe touch" and which lastingly maintains this mastic condition wherebythe material maybe packed and stored for long periods of time withoutlosing its tackiness and may be transported to its place of installationand used in such tacky condition Without further treatment.

A further object of my invention'resides' in the application of thisnormally lastingly adhesive, sticky to the touch, to sheets or strips ofcarrier material, hereinafter called vehicles, so that when rolled intopackage form or placed face to face in'contact with a similarsheet forpacking and storing "and transportation, they may be unrolled or pulledapart readily without tearing or'fdamaging, and can be installed intacky. condition; in this instance the tacky co'ating'permits the facileseparation of the contacting vehicle surfaces, the line ofcleavagepassing through the mastic itself. The vehicle thus provided with alasting adhesive, mastic coating is particularly adapted to'act as apacking for various types of installation, not only because of thewaterproofing quality of the-Inastic'but also because of its pronouncedand lasting. quality of adhesiveness and further because of itsplasticity.

A further object of my invention 'resides in the utilization of a dryingoil for saturating the vehicle, which provides such ve-- hic le with awaterproofing filler, thus preventing not onlythe access of air to theoil constituent on the mastic, lastingly adhesive coating, with whichthe saturated vehicle is coated, but also-prevents the deep penetrationof the oil of the coating into the v vehicle and prevents the drying outof the oil in the coating, whereby the coating is "maintained normallytacky, sticky to the touch, soft and pliable for long periods of time;practically indefinite.

In-the present invention the vehicle may consist of sheets, strips,orslabs of tar paper, felt, fabric, fibers or other preferred 4material.

In the present invention the saturant for 'i the vehicle consists of adrying oil, such as soya bean or China wood oil, preferably are normallymastic and tacky and sticky to the touch- Thedrying oils may be mixedwith nondrying oils. Such a formula would be linseed, neats foot, castoroil, etc., fifty (50) per "cent each or in varying quantities, Where Iuse blown drying oil the formula vnu1d. be soya bean or China wood oil.

Drying oils may be used for thereason that the application of adhesivethereto prevents'access of air, whereby drying is retarded to apractical extent. Said oil acts v as a waterproofing filler for thevehicle. The

saturated vehicle may then have applied thereto an adhesive which may beof any preferred kind. The fact that the vehicle is saturated with theoil will prevent the deep penetration of the adhesive into the body ofthe vehicle and at the same time/the oil will prevent the drying out ofthe adhesive,

whereby said adhesive will continue for long periods of time in itsmastic state.

The coating with which the vehicle is thus saturated on either one orboth sides preferably comprises a slow drying, tacky bituminoussubstance, which approximates the following specifications, or maybemore or less 2. The susceptibility factor should be as low as possible,preferably under25.

3. The ductility at 77 degrees F. should be as high as possible andpreferably over 25 centimeters. Y 4. Fusing point by K 8Q S methodshould be between 80 degrees and 100 degrees F.

5. It should appear tackyand adhesive at normal temperature and retainthis property as long as possible on exposure to air.

This formula is merely a standard and other formulas more or less fluidmay be used with or without a suitable filler as a flow retarder, or theflow tendency may be stopped by using a non-flowing gummy substance incombination. v

It will be understood that my invention contemplates constructionalmaterial, the ad- .liesiveness of which serves to hold said material inlace in distinction to other materials whic involve the use of pitch, orother material, mopped on at the time of assembling the material. Thisis especially true in the application of the invention to roofingsheets, for the purpose of holding the sheets of roofing material inplace. It will be understood that after two sheets ofbuilding materialaccording to the present invention have been separated, the adhesivesurface of one sheet will be placed in contact with the non-adhesivesurface. of another sheet. The adhesive or mastic will cause'a unionwith uon adhesive surfaces to which it is applied, which union may bemade very excellent by means of rolling and which will improve in thecourse of time. It will also be understood that if it should go he foundthat the adhesive surface of a sheet should become dried out, a solventsuch as toluol, benzol, kerosene, or cotton oil, may be used to bringthe sheet back into adhesive state.

The subject matter of this application has been withdrawn from my prior'Patent, No. 1,550,310, issued August 18, 1925.

I claim: 1. constructional material comprising a 40 vehicle saturatedwith a drying oil and coated with a waterproofing, mastic substance,

normally sticky to the touch and lastingly adhesive.

2. Construction material comprising a ve- 5 hicle saturated with a blowndrying oil and coated with a waterproofing, mastic substance, normallysticky to the touch and lastingly adhesive. I

3. Constructional' material comprising a 5 vehicle saturated with a'inixture of drying and non-drying oils and coated with a waterproofing,mastic substance, normally sticky to the touch and lastingly adhesive.

Signed at Chicago, .Illinois, this 9th day 5g; of August 1927. I

ALBERT C. FISCHER.

